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US Patent: 133,570
Improvement in Hollow Augers
Patentee: John Deming (exact or similar names) - Salem, OH USPTO Classifications: 30/495 Tool Categories: woodworking tools : hand drills : drill bits : hollow bits Assignees: Albert R. Silver - Salem, OH John Deming - Salem, OH Manufacturer: Silver & Deming - Salem, OH Witnesses: N. B. Watson N. A. Morlan	Patent Dates: Granted: Dec. 03, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Silver & Deming Mfg. Co.

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